Replace uses of GR_DEBUGCODE by SkDEBUGCODE.

BUG=None
TEST=none, no functional changes.
R=bsalomon@google.com, robertphillips@google.com

Author: tfarina@chromium.org

Review URL: https://chromiumcodereview.appspot.com/23703010

git-svn-id: http://skia.googlecode.com/svn/trunk@11142 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/gr_unittests.cpp b/src/gpu/gr_unittests.cpp
index f586a94..cf298cc 100644
--- a/src/gpu/gr_unittests.cpp
+++ b/src/gpu/gr_unittests.cpp
@@ -74,7 +74,7 @@
 
 
 void gr_run_unittests() {
-    GR_DEBUGCODE(test_bsearch();)
+    SkDEBUGCODE(test_bsearch();)
     test_binHashKey();
     GrRedBlackTree<int>::UnitTest();
 }